Any interest in cams?

[Ulvetanna_imp]

Best bang for the buck, intake/exhaust mods and reflash. Hard to say just what the engine could stand in terms of lift and duration, and additional heat produced by the extra energy. But this thread is one to watch. I'd like to see what's what with the cams. Not hard to swap them out, that's for sure.

I would like to have cams that would fix the deliberate miss matched timing.
Don't need any more power though.
Kevin

I'm very much interested in this too. I find mine a bit rough around the 3400 - 3800 RPM range and blame it on the deliberate mismatch.

What I'd like ideally is to buy new cams from a reputable cam shop that makes them just like stock except to fix the mismatch firing. Then would need someone like Don Guhl to reflash the ECU to correct the timing and it would be in theory smoother than it is now. Either that or I just need to let it go.

I'm very much interested in this too. I find mine a bit rough around the 3400 - 3800 RPM range and blame it on the deliberate mismatch.

What I'd like ideally is to buy new cams from a reputable cam shop that makes them just like stock except to fix the mismatch firing. Then would need someone like Don Guhl to reflash the ECU to correct the timing and it would be in theory smoother than it is now. Either that or I just need to let it go. I also would not mind having that little burble dialed out. I wonder about the cams for the 2017...what changes? I think there must be some kind of change because torque numbers are claimed to be at a different part of the RPM range.

I respectfully, but highly disagree. I've been doing this my whole life, have done hundreds of dynos and am anal enough to dyno piece by piece and compare. Hell, my current play car alone has had 4 different sized cam sets in it, each dynoed by themselves- I dynoed it at 2 different dynos in 3 days just 2 weeks ago just to compare results. That isn't counting different headers, cats, catbacks, ported cyl head, bigger throttlebody...

Cams on this bike should make intake/exhaust/flash look like a joke and a waste of money.

Don't misunderstand- and engine is an air pump and complete package, any bottleneck is a bottle neck, but I have yet to see where cams aren't king.

For now I own a Staintune muffler, Arrow headers, Dynojet Power Commander, Dynojet Autotune. A set of cams should do nicely- and if not extreme shouldn't loose much down low. You would be amazed how much is choked off on modern stuff for emissions and sound.

I respectfully, but highly disagree. I've been doing this my whole life, have done hundreds of dynos and am anal enough to dyno piece by piece and compare. Hell, my current play car alone has had 4 different sized cam sets in it, each dynoed by themselves- I dynoed it at 2 different dynos in 3 days just 2 weeks ago just to compare results. That isn't counting different headers, cats, catbacks, ported cyl head, bigger throttlebody...

Cams on this bike should make intake/exhaust/flash look like a joke and a waste of money.

Don't misunderstand- and engine is an air pump and complete package, any bottleneck is a bottle neck, but I have yet to see where cams aren't king.

For now I own a Staintune muffler, Arrow headers, Dynojet Power Commander, Dynojet Autotune. A set of cams should do nicely- and if not extreme shouldn't loose much down low. You would be amazed how much is choked off on modern stuff for emissions and sound. Replacing cams is what you like to do, so for you it seems like no more difficulty than changing an oil filter, and really, it isn't that hard, but it is a few hours work for the CB1100, and fraught with peril for the non-mechanic. Not to mention it would completely void the bike's warranty. (An ECU flash might also, but that could argued or even swept under the rug by reflashing back to stock or swapping the ECU as some do). Heck, most guys are not at all willing to take on a valve clearance check let alone mess with changing cams, especially since the bike does not have a chassis up to handling any more power. Yep, I mean any more. Even five horses is too much more for this bike. I just spent all day tearing around our local canyons confirming that once again. It don't have the suspenders or gridwork for putting 100 horse to the ground.

Anyway, that is an interesting comparison, because a change in camshaft makes a reflash absolutely necessary; it could not be done safely or correctly without that. On the other hand, the reflash could be without a cam change and still get that 5 ponies, but of course some kind of exhaust work would be needed. A better reflash is Guhl's basic flash, which removes restrictions per gear position (the first three gears retard the timing) and per the speed limiter, is said to smooth throttle response.

The last thing most owners want is more top end. Shoulda bought another bike for that; BMW's RNineT, Triumph's Thruxton 1200, those are retros with good top end.

As far as I can discern no one even makes a cam for this bike. Maybe I missed that so apologies if I did.

Again- disagree, sorry


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Just keep us posted on this. I am actually interested in see what's possible and what your dyno results are, with the whole mod package.